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VFC110AG-VFC110AP-VFC110BG
High Frequency Voltage-to-Frequency Converter
FEATURES HIGH-FREQUENCY OPERATION:
4MHz FS max EXCELLENT LINEARITY:±0.02% typ at 2MHz
PRECISION 5V REFERENCE DISABLE PIN LOW JITTER
APPLICATIONS INTEGRATING A/D CONVERSION PROCESS CONTROL VOLTAGE ISOLATION VOLTAGE-CONTROLLED OSCILLATOR FM TELEMETRY
DESCRIPTIONThe VFC110 voltage-to-frequency converter is a
third-generation VFC offering improved features and
performance. These include higher frequency operation,
an onboard precision 5V reference, and a Disable
function.
The precision 5V reference can be used for offsetting the
VFC transfer function, as well as exciting transducers or
bridges. The Enable pin allows several VFCs’ outputs to
be paralleled, multiplexed, or simply to shut off the VFC.
The open-collector frequency output is TTL-/
CMOS-compatible. The output may be isolated by using
an opto-coupler or transformer.
Internal input resistor, one-shot and integrator capacitors
simplify applications circuits. These components are
trimmed for a full-scale output frequency of 4MHz at 10V
input. No additional components are required for many
applications.
The VFC110 is packaged in a plastic 14-pin DIP . Industrial
and military temperature range gradeouts are available.Input Common
VIN
IIN VOUT
Comparator
−VS Analog Ground
COS
Digital GroundOUT
+VS
Enable5
VFC110SBVS021A − OCTOBER 1988 − REVISED APRIL 2007
High-Frequency
VOLTAGE-TO-FREQUENCY CONVERTER
